WordNet: couch, lounge, sofa

an upholstered seat for more than one person

• hypernym seat

• hyponym convertible, sofa bed

• hyponym daybed, divan bed

• hyponym divan

• hyponym love seat, loveseat, tete-a-tete, vis-a-vis

• hyponym settee

• hyponym squab

couch

• (suomi) leposohva (synonyymi)

lounge

• (englanti) lounge (derivationally related)
• (suomi) seslonki (synonyymi)

sofa

• (suomi) sohva (synonyymi)